110 citations · 615 across the 16 of their papers we have counts for
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Vortex lattice and vortex bound states in CsFeAs investigated by scanning tunneling microscopy/spectroscopy
Xiong Yang, Zengyi Du, Hai Lin +4
We investigate the vortex lattice and vortex bound states in CsFeAs single crystals by scanning tunneling microscopy/spectroscopy (STM/STS) under various magnetic fields. A…
Strong coupling superconductivity revealed by scanning tunneling microscope in tetragonal FeS
Xiong Yang, Zengyi Du, Guan Du +6
We investigate the electronic properties of the tetragonal FeS superconductor by using scanning tunneling microscope/spectroscopy. It is found that the typical tunneling spectrum o…
Drive the Dirac Electrons into Cooper Pairs in SrxBi2Se3
Guan Du, Jifeng Shao, Xiong Yang +9
Topological superconductor is a very interesting and frontier topic in condensed matter physics1. Despite the tremendous efforts in exploring the topological superconductivity, its…
Possible superconducting fluctuation and pseudogap state above in CsFeAs
Huan Yang, Jie Xing, Zengyi Du +5
Resistive, magnetization, torque, specific heat and scanning tunneling microscopy measurements are carried out on the hole heavily doped CsFeAs single crystals. A character…
Scrutinizing the double superconducting gaps and strong coupling pairing in (Li1-xFexOH)FeSe
Zengyi Du, Xiong Yang, Hai Lin +6
In the iron based superconductors, one of the on-going frontier studies is about the pairing mechanism. The recent interest concerns the high temperature superconductivity and its…
Fully gapped superconductivity in In-doped topological crystalline insulator PbSnTe
Guan Du, Zengyi Du, Delong Fang +5
Superconductors derived from topological insulators and topological crystalline insulators by doping have long been considered to be candidates as topological superconductors. Pb$_…
Anisotropic Superconducting Gap and Elongated Vortices with Caroli-De-Gennes-Matricon States in the New Superconductor Ta4Pd3Te16
Zengyi Du, Delong Fang, Zhenyu Wang +5
The superconducting state is formed by the condensation of a large number of Cooper pairs. The normal state electronic properties can give significant influence on the superconduct…
Observation of a van Hove singularity and implication for strong coupling induced Cooper pairing in KFe2As2
Delong Fang, Xun Shi, Zengyi Du +14
Scanning tunneling spectroscopy (STS) and angle-resolved photoemission spectroscopy (ARPES) have been investigated on single crystal samples of KFe2As2. A van Hove singularity (vHs…
The spectroscopic signature of Kondo screening on single adatoms in Na(Fe0.96Co0.03Mn0.01)As
Zhenyu Wang, Delong Fang, Qiang Deng +3
The electronic states of surface adatoms in Na(Fe0.96Co0.03Mn0.01)As have been studied by low temperature scanning tunneling spectroscopy. The spectra recorded on the adatoms displ…
Close relationship between superconductivity and the bosonic mode in Ba0.6K0.4Fe2As2 and Na(Fe0.975Co0.025)As
Zhenyu Wang, Huan Yang, Delong Fang +6
Since the discovery of high temperature superconductivity in the iron pnictides and chalcogenides in early 2008, a central issue has been the microscopic origin of the superconduct…
Unexpected Giant Superconducting Fluctuation and Anomalous Semiconducting Normal State in NdO1-xFxBi1-yS2 Single Crystals
Jianzhong Liu, Delong Fang, Zhenyu Wang +5
The BiS2-based superconductors were discovered recently. The superconductivity has been proved by many other groups. Since the previous experiments were all done on polycrystalline…
In-Gap Quasiparticle Excitations Induced by Non-Magnetic Cu Impurities in Na(Fe0.96Co0.03Cu0.01)As Revealed by Scanning Tunneling Spectroscopy
Huan Yang, Zhenyu Wang, Delong Fang +5
The pairing mechanism in the iron pnictides remains unresolved yet. One of the central issues is the structure of the superconducting order parameter which classifies the community…
Strong coupling superconductivity and prominent superconducting fluctuations in the new superconductor Bi4O4S3
Sheng Li, Huan Yang, Delong Fang +4
Electric transport and scanning tunneling spectrum (STS) have been investigated on polycrystalline samples of the new superconductor Bi4O4S3. A weak insulating behavior in the resi…
Influence of microstructure on superconductivity in KFeSe and evidence for a new parent phase KFeSe
Xiaxin Ding, Delong Fang, Zhenyu Wang +7
The search for new superconducting materials has been spurred on by the discovery of iron-based superconductors whose structure and composition is qualitatively different from the…
Unexpected weak spatial variation of local density of sates induced by individual Co impurity atoms in Na(Fe{1-x}Cox)As as revealed by scanning tunneling spectroscopy
Huan Yang, Zhenyu Wang, Delong Fang +7
We use spatially resolved scanning tunneling spectroscopy in Na(Fe{1-x}Cox)As to investigate the impurity effect induced by Co dopants. The Co impurities are successfully identifie…